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F. 0. MATTH'IESSEN.

APPARATUS FOR DEGOLOBIZING SUGAR LIQUOR BY FILTRATION THROUGH BONE BLACK.

No. 385,763. Patented Feb. 9, 1886.

N4 PETERS, 'PhnkwLhhngrapHlm Washington, D. C.

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hi ifiht' FRANZ O. MATTHIESSEN, OF IRVINGTON, NETV YORK.

SPECIFICATION forming part of Letters Patent No. 335,763, dated February 9, 1886.

Application filed August 20, 1885. Serial No. 174,865. (X model.) v

To aZZ whom it may concern.-

Beit known that LFRANZ O. 1VIATTHIESSEN, of Irvington, New York, have invented certain Improvementsin Apparatus for Effecting the Decolorization of Sugar-Liquor by Filtration through Bone-Black, of which the followblack with which the sugar-liquor first acquires contact becomes so clogged with impurities that the sugar-liquor cannot pass through it.

The object of myimprovement is to provide for a more uniform utilization of the decolorizing power of all the bone-black contained in the filtering-chamber, to which end I provide the filtering-chamber with a stirrer, by the operation of which at the proper time I stir the contents thereof, and thus break up the stratum of bone-black which has been clogged by the impurities, and miX those portions of the mass of bone-black which have become exhausted with other portions which still retain to some extent their decolorizing power.

The accompanying drawings,illustrating apparatus embodying my invention, are as follows:

Figure l isa central vertical section of a filtering-vessel in form of a horizontal cylinder supported on rolling bearings and provided with mechanism by means of which it may be rotated upon its longitudinal axis, and also showing a stirrer composed of a horizontal shaft provided with radially-projecting arms and provided with bearings in the end of the filtering-vessel. Fig. 2 is an end elevation showing the worm-gearing for rotating the filtering-cylinder. Fig. 3 is a transverse vertical section on the linex or on Fig. 1.

Referring to the drawings, it will be seen that the filtering-vessel A is a hollow cylinder provided with circumferential flanges or hands a a, a which are engaged in the grooves of two parallel systems of grooved rollers, 13 b, mounted in suit-able bearings in a substantial frame, 0, servingto support the filtering-cylinder A, as shown. One of the flanges a is provided with the teeth d, which are suitably shaped to be engaged by the worm D, mounted in substantial fixed bearings, D D and provided with a toothed wheel, D or other instrumentality by means of which the worm D can be turned for the purpose of effecting the rotation of the filtering-cylinder A. The filtering-cylinder is provided at the top with an opening, A, which may, if desired, be closed by the application of the cover A. On the side opposite the opening A the filteringcylinder is provided with a series of dischargecocks, E E, &c., the operating-levers e e, 850., of which are adapted to be engaged by the teeth f f f, 850., of the horizontal bar F, to

which a reciprocating sliding motion may be given by means of the hand-lever F, for the purpose of simultaneously opening or closing the discharge-cocks E E, 8m.

In the position in which the parts are rep resented in the drawings the opening A is at the top of the cylinder,the discharge-cocks are closed, and their operating-levers hang vertically downward, so that when the filteringcylinder A is rotated upon its horizontal axis the operating-levers e e, 850., are swung out from between the teeth ff, 820., of the horizontal bar F.

The charge of bone-black required to fill the cylinder A is introduced through the opening A. For the discharge of the bone-black the cylinder is turned, say, half around, and the cover A being removed the bone-black then falls by its own gravity out of the opening A. The filtering-cylinder is provided with a stirrer consisting of the horizontal shaft G, mounted in suitable bearings, G G in the opposite ends of the cylinder A, and provided with the radially-projecting arms 9 g,&c. The proj ecting outer end of the shaft G is provided with a crank or otherinstrumentalitysuch as the drum-head Gprovided with radial holes for the reception of bars, by means of which it can be rotated for the purpose of stirring the contents of the filtering-vessel.

The sugar-liquor to be decolorized is intro duced into the filtering-chamber A by means of the service-pipe H, and in operation is allowed to remain in contact with the bone-black contained in the filtering-chamber for any desired length of time, and is then, after havingbeen subjected to the decolorizing influence of the bone-black, discharged by opening the discharge-cocks E. Whenever, owing to the collection of impurities at the top of the mass of bone-black contained in the filteringchamber, it becomes necessary to do so, the stirrer is rotated, thusbreakin g up the stratu m of bone-black at the top which has become highly charged with impurities, and mixing it with the remainder of the bone-black, the filtering operation being continued by the introduction into and discharge from the, filtering-chamber of additional quantities of sugarliquor until the decolorizing power of the boneblack contained therein has been so far exhausted as to render necessary the discharge of the filtering-chamber and the introduction into it of a supply of fresh bone-black.

I claim as my invention 1. In apparatus for deeolorizing sugar-liquor by the process of filtration through boneblack, a rotatable cylindrical filtering-chamber supported in horizontal bearings and provided with an opening in its surface through I which bone-black can be introduced into and discharged from it, and also provided with a series of drain-cocks arranged in a line parallel with its axis, in combination with a stirrer and means for operating the same for stirring the bone black contained in the filteringchamber during the progress of the operation of decolorizing sugar-liquor which has been introduced into the filtering-chamber.

2. The filtering-cylinder A, containing a stirrer, G, and provided with an opening, A, in its surface and with suitable drain-cocks, and provided with two or more circumferential flanges, in combination with two parallel series of rollers mounted in horizontal bearings, and

having grooved faces for engaging the said.

flanges, and means for rotating the filteringcylinder, as and for the purpose set forth.

3. The filtering-cylinder A, containing the stirrer G, and provided with the series E of drain-cocks, each having an operatinglever, e, in combination with the reciprocating bar F, provided with the teeth f f, &c., as and for the purpose set forth.

F. O. MATTHIESSEN.

Witnesses:

R. O. HOWES, EDW. E. QUIMBY. 

